Home › AP Biology › Biology › The Evolution of Populations › Selection for phenotypes at one end of the spect…
Selection for phenotypes at one end of the spectrum of existing variation is called:
AArtificial selection
BDirectional selection
CStabilizing selection
DDiversifying selection
Answer & Solution
Correct answer: B. Directional selection
1. The modes of selection differ in which phenotypes they favour.
2. When the environment changes, populations will often undergo directional selection.
3. Directional selection selects for phenotypes at one end of the spectrum of existing variation.
4. Diversifying selection instead favours two or more distinct phenotypes at once.
_Source: OpenStax Biology 2e (CC BY 4.0), Ch 19 'The Evolution of Populations', sections 19.1-19.3_
Related questions
If p is 0.6 in a Hardy-Weinberg population, the frequency of heterozygotes is:Random change in allele frequencies with no advantage over existing frequencies describes:Under both the handicap principle and the good genes hypothesis, the male trait functions The good genes hypothesis holds that males develop impressive ornaments to show off:Genetic drift and natural selection are described as processes that:Sexual dimorphisms are described as arising particularly where there is more variability iDifferences between males and females beyond the reproductive organs are called:An individual's preference to mate with partners phenotypically similar to itself is: